7641563320 has 32 divisors (see below), whose sum is σ = 17517928320. Its totient is φ = 2998952320.

The previous prime is 7641563243. The next prime is 7641563323. The reversal of 7641563320 is 233651467.

It is a self number, because there is not a number n which added to its sum of digits gives 7641563320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7641563323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1800136 + ... + 1804375.

It is an arithmetic number, because the mean of its divisors is an integer number (547435260).

Almost surely, 2^7641563320 is an apocalyptic number.

It is an amenable number.

7641563320 is an abundant number, since it is smaller than the sum of its proper divisors (9876365000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7641563320 is a wasteful number, since it uses less digits than its factorization.

7641563320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3604575 (or 3604571 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 7641563320 is about 87416.0358286739. The cubic root of 7641563320 is about 1969.6727294389.

The spelling of 7641563320 in words is "seven billion, six hundred forty-one million, five hundred sixty-three thousand, three hundred twenty".